Plait-folder for sewing-machines.



7 N05. 7l2,399. Patented Oct. 28, I902.

' J. MOST.

PLAlT FOLDER FOR SEWING MACHINES.

(Application filed Apr; 3, 1902.1;

2 Sheets-Sheet (No Model.)

WITNESSES //v VENTOR .wmbev- A Trams/Er THE norms Pawns ca, Pnomurnm wAsnlNpTom u. c;

No. 712.399, Patented Oct. 28, I902 J. MUST. PLAIT FOLDER FOR SEWING MACHINES.

iApplicati m filed Apr. 3, 1902.) (No Model.) 2 Sheets-Sheet 2.

' W/TNL'SSES INVENTOF A 77'ORNEY UNITED STATES PATENT OFETCE.

JOHN MOST, OF JERSEY o1TY,N JERSEY, AssreNoE TO WHEELER &

WILSON MANUFACTURING COMPANY, OFBRIDGEPO-RT, CONNECTICUT, A CORPORATION "OF CONNECTICUT. i

PLAlT-FOLDER FOR SEWING-MACHINES.

SPECIFICATION formingpart of Letters Patent No. 712,399, dated October 28,1902.

8 -Application filed April 3, 1902. Serial 110,101,263. (No model.)

T 00% whom it mag concern Be it known that I, JOHN Mos'r, a citizen of the United States, residing at J ersey. City, in

the-county of Hudson and State of New J er sey, haveinventeda certain new and useful Improvement in Plait-Folders for Sewing-Machines, of which the following is a full, clear,

and exaotdescription.

My invention relates to plait-folders for sewing-machines. The object of my invention isto provide a bozeplait folder which is readily adjustable for box-plaits of various widths andof extremely simple construction.

My invention comprises suitably shaped adjustable folders or tongues upon which the material is plaited on its way to the stitching mechanism of the sewing-machine, together with suitable means for supporting said fold ers in proper relative position.

My invention further consists in certain details of construction and combinations of parts, all as I will now proceed to describe and claim, i i i In the accompanying drawings, illustrating my invention, in theseveralfigures of which like parts are similarly designated, Figure 1 is a plan view. Fig. 2 is a front edge elevation of the same looking in the direction in which the material travels toward the stitching mechanism of the sewing-machine. Fig.

3 is a cross-section taken in the plane of line.

an ac, Fig. 1. Fig. 4 is a planview similar to Fig. 1, but showing the material as it passes through the folders on its way to the stitching mechanism of the sewing-machine with the folder adjusted for a box-plait to be served, by adouble line of-stitches. Fig. 5 is a detail perspective view of one of the adjustable folders. Fig. 6 is a view similar to FigLt, but partly broken and showing the folder adj usted fora box p1ait to be sewed by a single line of stitches.

presently explained.

pose.

6 and 7, which pass, respectively, through slots 8 and 9, formed in said folder-plates, and are tapped within said base-plate. the folder-plates 4 5 is provided on its under side, preferably at the front edge, with a rib or feather 10, adapted to fit and slide within.

curled flanges formed on the adjacent edges of the folder-plates A: and 5, respectively,

which terminate in flattongues 14 and 15, projecting from the delivery edge of said folderplates, said tongues jointly forming the core Each of i or former upon which the box-plait 16 is folded.

1.7 is a plate supported in position directly over the folder-plates 4 and 5 by an overhanging bracket-arm 18, sufficient space being left between said plate 17 and folderplates 4 and 5 topermit the easy passage of the material.

The overhaugingbracket-arm 18 is attached at one end to the base-platel by screws 19 and 20, while to the other end of said bracketarm is securedthe plate 17 by screws 21 and 22. 23and 24 are screws tapped within the opposite endsof said bracket-arm and bearing respectivelyupon the plate 17 and baseplate 1, .the function of which screws will be 25 and, 26 are depending folding-fingers, whose delivery ends protrude beneath the tongues 14 and 15, while the heel ends of said folding-fingers are secured to the overhanging plate 17 by screws 27 and 28, which pass through slots 29 and 30 and aretappedwithin said plate 17. r

31 is a groove formed within the upper surface of the plate 17similar to the groove 10 in the base-plate 1, and each of the foldingfinge rs 25 and 26 isprovided on its under side with a rib or feather 32, adapted to fit and slide within said groove in a manner similar to the folder-plates 4 and 5 and for a like pur- The fabric to be plaited is passed between the base-plate l and the overhanging plate 17 over the core formed by the curled flanges 12 and 13 and tongues Hand 15 and thence under the folding-fingers and 26, the ends and inner edges of the latter being covered, as shown in Fig. 4, by the overlapping folds of the'newly-formed plait.

The feed mechanism of the sewing-machine serves to draw the fabric through the folder in any usual manner.

33 indicates a loox-plait folded for and sewed by a double row of stitches, (see Fig. 4,) and 34 is a box-plait folded for and sewed by a single line of stitches. (See Fig. 6.)

It'will be observed that in Fig. 6 the delivery ends of the folding-fingers 25 and 26 are somewhat overlapped, so as to cause the underlying folds of the boX-plait to likewise overlap, thus enabling a single line of stitches centrally disposed to unite simultaneously all the folds of the plait.

It is often desirable to form a series of boxplaits parallel with each other, and for this purpose I have provided an adjustable guide 35, which is secured to the plate 17 by a set- V screw 36,. which passes through a slot 37,

formed in the body portion of said guide. The depending flanges 38 of said guide bear against the front edge of the plate 17, and thereby serve to hold said guide in proper aliuement.

In making a series of parallel boX-plai'ts the guide is adjusted for the distance it is desired to have the plaits apart, and after having completed one boX-plait the material is moved or adjusted until the guide 35 is in proper position beneath the edge of said previously-formed plait, as shown in Fig. 4, and the operation continued until the desired number of boX-plaits has been obtained.

By loosening the screw 19 and tightening the screw 23 the bracketarm 18 may be slightly tilted upwardly to provide fora limited vertical adjustment of the folding-fingers 25 and 26, and in order to tip the said fingers toward and from the bed-plate the screws 21 22 24: may be similarly adjusted, and the free ends of the folding-fingers thus inclined more or less in the direction of their length.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a box-plait folder for sewing-machines, the combination of a base-plate, and right and left hand folder plates adj ustably secured thereon and provided on their adjacent edges with tongues which jointly form the core around which the box-plait is made, with adjustable folding-fingers adapted to cooperate with said tongues, and means for supporting said folding-fingers in proper relative position.

2. In a box-plait folder for sewing-machines, the combination of a base-plate, and right and left hand folder plates adj ustably secured thereon and provided on their adjacent edges with tongues-which jointly form the core around which the box-plait is made, with an overhanging plate, adjustable folding-fingers arranged thereon and adapted to cooperate with'said tongues, and a bracket-arm on said base-plate by means of which said overhanging plate is supported.

3. In abox-plaitt'old'er for sewing-machines, the combination of a base-plate, right and left hand folder-plates adjustably secured thereon and provided on their adjacent edges with tongues which jointly form the core around which the box-plait is made, an overhanging plate, a bracket-arm by means of which said overhanging plate is supported, and adjustable folding-fingers carried by said overhanging plate and adapted to cooperate with said tongues, with an adjustable guide also carried by said overhanging plate.

4. In abox-plait folder for sewing-machines, the combination of a base-plate provided with a groove, and right and left hand folderplates provided on their adjacent edges with tongues which jointly form the core around which the box-plait is made, said folder-plates provided with ribs or feathers adapted to fit and slide within the groove in said base-plate, with adjustable folding-fingers adapted to 00- operate with said tongues, and means for supporting said folding-fingers in proper relative position.

5. In a boX-plait folder for sewing-machines, the combination of a base-plate, right and left hand folder-plates provided on their adjacent edges with tongues which jointly form the core around which the box-plait is made, said folder-plates being provided with ribs or feathers adapted to fit and slide within the groove in said base-plate, an overhanging plate having a groove, adjustable foldingfingers carried by said overhanging plate and adapted to cooperate with said tongues, said folding-fingers being provided with ribs or feathers adapted to fit and slide within the groove in said overhanging plate, whereby the proper aliuement of said fingers is preserved during adjustment, and means for supporting said overhanging plate in proper position, substantially as set forth.

' 6. In a box-plait folder for sewing-machines, folder-plates, and a base-plate upon which they are mounted, said folder-plates having curled flanges terminating in fiat tongues, combined with adjustable folding-fingers converging beneath the said tongues and adapted to overlap.

7. In a box-plait folder for sewing-machines, a base-plate, folder-plates adjustable toward and from one another upon said base-plate, and having curled flanges terminating in fiat tongues, folding-fingers extending beneath the tongues, and means for adjusting said fingers toward and from one another.

8. In a box-plait folder forsewing-machines, a base -plate, an overhanging arm mounted thereon, means to tilt said arm vertically, a

a base-plate, an overhanging armmounted plate supported upon said arm, and foldingfingers on said plate, combined with complemenral folder-plates onthe base-plate.

9. In a box-plait folder forsewing-maehines,

thereon, means to tilt said arm vertically, a platesupported upon said arm, folding-fingers on said plate, and means for tipping the i said plate on said harm soas to incline the my handthis 1st day 06A fingers relativelyto thebase-plate, combined IO with complemental folder-plates on the baseplate. a In testimony whereof I have hereunto set pril, A. D. 1902. JOHN MOST.

Witnesses: L. W. HIoKEY,

FLoY D. HOPKINS. 

